Oklahoma troopers share top 10 commercial vehicle violations uncovered in June

The Oklahoma Highway Patrol (OHP) released a list of the top 10 violations encountered by commercial vehicle inspectors last month.

OHP recently shared a list of the most common commercial vehicle violations spotted by OHP Troop S – Size & Weights troopers in June 2026.

“An 80,000-pound commercial vehicle is a tremendous responsibility,” OHP said. “That’s why Oklahoma Highway Patrol Troop S – Size & Weights troopers – conduct thousands of inspections each year to ensure commercial vehicles operating on our highways meet state and federal safety standards.”

The below for OHP’s ten most common commercial vehicle violations for June.

1. Brake out of adjustment – 186
2. Operating without documentation of a required periodic inspection – 169
3. State registration/tag violations – 141
4. Excessive weight (1–2,500 lbs. over on an axle/axle group) – 124
5. Tire inflation below safe limits or leaking tire – 123
6. Defective brakes affecting 20% or more of the vehicle’s service brakes – 95
7. Automatic air brake adjustment system failure – 93
8. Audible air brake leak – 92
9. Excessive weight (2,501–5,000 lbs. over on an axle/axle group) – 91
10. Speeding 6–10 mph over the posted speed limit – 91

“Most commercial drivers are committed professionals who take safety seriously. Our Troop S troopers are there to ensure that every commercial vehicle traveling Oklahoma’s highways is as safe as possible—for the driver behind the wheel and for every family sharing the road,” OHP said.